Opening Leak Lab

Saragossa Opening

A00 1. c3

Black scores 49.5% here across 1,069 club games — but the 7.2% who answer e6 score 39.6%, 10 points worse.

What Black actually plays here

Across 1,069 games from a Lichess-derived book of club play, Black scores 49.5% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare Black scoresVerdict
e5 393 36.8% 47.5% holds up
d5 297 27.8% 51.2% holds up
e6 77 7.2% 39.6% below the line
Nf6 66 6.2% 57.6% holds up
c5 64 6.0% 59.4% holds up
g6 48 4.5% 51.0% holds up
c6 38 3.6% 43.4% below the line
d6 31 2.9% 48.4% holds up

"Below the line" means the reply scores at least three points worse than the position does overall. Replies played fewer than 25 times are left out: the sample is too small to read.

Is this costing you anything?

A table of averages cannot tell you whether you go wrong here — only your own games can. Opening Leak Lab reads your Chess.com or Lichess archive, finds the decisions you repeat, and checks each one against this book and a bundled Stockfish.

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